"He was in the hospital getting his appendix taken out and they needed to test him and they were like, 'Why don't the both of you get tested?' " Osbourne told me this morning at Project Angel Food, a meal assistance program for people living with HIV and AIDS in the L.A. area. "They have amazing ways to be tested now. They had this thing that they just swabbed the inside of our cheeks with and within 10 minutes they told us."

Osbourne didn't have any reason to be believe she had the virus, but knows it's better to be informed than not: "Now, it's something that is part my yearly checkup with my doctor."

The former reality TV star and current panelist on E!'s Fashion Policewas at Project Angel Food to commemorate World AIDS Day with MAC Cosmetics' MAC AIDS Fund.

"When people say things like, 'It's never going to happen to me or I'll never get it," they're less inclined to protect themselves the way that they should," she said. "It's so simple. All you have to do is wear a condom. It's not like anyone is asking you to do something really difficult and hard."

However, Osbourne admits she doesn't have a condom with her at all times. "I have condoms," she said. "But I'm not the kind of person who will go out with them because if I meet someone, it's not like I'm just going to have sex with him the first time we meet."